2006 Cadillac STS “Cadillac estimates the V8 rear-drive version of the upcoming STS to be able to accelerate from 0 to 60 mph in just 5.8 seconds. All-wheel drive adds a second.” — New Car Test Drive See More Reviews

2006 INFINITI M45 “The stiff superstructure, with wheels stretched to the corners and the engine behind the front wheels, adds up to a package more than capable of hitting the sweet spot in balance, ride and handling in a sport-luxury sedan.” — AutoWeek See More Reviews

3.9

3 TIE

2006 Lincoln LS “Comfortable but not particularly stylish inside, the LS boasts seats that suit most drivers, plus a proper assortment of logically arranged controls. Although some materials inside don't present a feeling of luxury, the LS is nevertheless comfortable. For a sedan of this size, however, the back seat is a bit tight. No complaints about the gearbox; it's responsive and we like how the manual gate is set to the side.” — Road & Track See More Reviews

3.9

3 TIE

2006 Saab 9-5 “Each [trim level] has a distinct personality, with individual interior styles, different performance levels, and different price points to suit the priorities of their buyers.” — New Car Test Drive See More Reviews

2006 Lincoln Town Car “The Town Car is appealing for its spacious seating for six people and a trunk that provides cavernous storage for luggage and golf clubs.” — New Car Test Drive See More Reviews

3.8

4 TIE

2006 Mercedes-Benz CL500 “The CL features an Active Body Control suspension system that minimizes body motions while cornering by using hydraulic springs to keep the car level.” — Car and Driver See More Reviews

3.8

4 TIE

2006 Acura RL “With eight-way adjustability for the driver's seat plus a steering column that telescopes as well as tilts, nearly any adult should find a comfortable position behind the RL's wheel.” — Cars.com See More Reviews

3.8

4 TIE

2006 Jaguar S-TYPE “Slathered in real wood and sumptuous leather, the Jaguar S-Type's interior has few competitors that are as opulently trimmed.” — Edmunds.com See More Reviews

3.8

5

2006 INFINITI Q45 “It's balanced well for driving on twisting roads and it's very stable at high speeds. Its ride quality is firm yet sophisticated.” — New Car Test Drive See More Reviews

2006 Mercedes-Benz CLS55 AMG “Ride, acceleration and handling are superior -- so seductive and addictive that they keep you in the car, constantly searching for the next curve, the next fast lane, going nowhere in particular in a world of specific agonies.” — Cars.com See More Reviews

2006 Audi A4 “Safety features include a comprehensive array of airbags and full-coverage side air curtains as standard equipment.” — New Car Test Drive See More Reviews

3.7

5 TIE

2006 BMW 525 “The front strut and rear multilink suspensions soak up the imperfections on the asphalt with poise. Push it harder through the turns and the 5 corners with tremendous grip and stability.” — Road & Track See More Reviews

3.7

5 TIE

2006 BMW 530 “The front strut and rear multilink suspensions soak up the imperfections on the asphalt with poise. Push it harder through the turns and the 5 corners with tremendous grip and stability.” — Road & Track See More Reviews

3.7

5 TIE

2006 BMW 550 “...the predecessor...BMW 5-Series was a recommended buy of Consumer Reports magazine, and this year's J.D. Power and Associate Dependability Study of 3-year-old cars showed the BMW brand above the industry average.” — MSN Autos See More Reviews

2006 Volvo S80 “When it comes to ride comfort, feature content and uncompromised safety, the S80 excels, but for those who prefer a little sport in their sedans, the S80 will leave you wishing for more.” — New Car Test Drive See More Reviews

3.7

6

2006 Audi A8 “Throttle response is gratifying, to say the least. Whether taking off from a stoplight or jetting up to cruising speed on the freeway, a solid rush of power is always on tap.” — Edmunds.com See More Reviews

3.6

6 TIE

2006 Mercedes-Benz S430 “Virtually every convenience imaginable, from massaging front seats to electric door-close assists, and the most sophisticated passenger-car safety technology money can buy.” — New Car Test Drive See More Reviews

3.6

6 TIE

2006 Volvo S60 “The heating, ventilation and air conditioning controls are well designed and easy to operate, with big buttons that use Volvo's clever metaphoric design to direct the airflow.” — New Car Test Drive See More Reviews

2006 Cadillac CTS “While the automatic is a gem of a transmission, it's the manual that makes for a rare treat in this Cadillac, since it has been nearly 20 years since a manual tranny has seen the inside of a Caddy.” — AutoWeek See More Reviews

3.6

7

2006 Volvo V70 “Occupants are shielded by a safety-cell structure and active seats designed to prevent whiplash injuries. Airbags are positioned ahead, beside and above.” — New Car Test Drive See More Reviews

3.5

7 TIE

2006 Audi A6 “An "advanced key" option allows you to start the car without digging around for the key at the bottom of your purse or briefcase. Sensors recognize the key, and to start the car, you press the "engine start" button.” — Cars.com See More Reviews

2006 Jaguar X-TYPE “Inside the cabin, the flowing design theme from the exterior carries through onto the instrument panel. Wood veneers on the dash and on the center console, combined with the wood and leather-trimmed steering wheel, give the passenger cabin an upscale look and feel.” — Road & Track See More Reviews

3.5

8

2006 Volkswagen Phaeton “Our test car was equipped with a 4.2-liter, 335-hp, 317-lb-ft V8, the same engine in the A8 L, and we found it a delight (a W12 engine is optional), with a wonderful exhaust growl, something you don't expect in a luxury car.” — AutoWeek See More Reviews

Autos.com editors have compiled the most extensive rating database on the internet, drawing upon $20 million of automotive research from CarsDirect and Autodata, and summarizing expert opinion from an extensive group of the leading third party sources. Here is a brief overview of how we do it:

Professional Reviews Ranking: Autos.com editors analyze car reviews from a range of magazines and websites, distill each down to a quantifiable ranking and then average those rankings to arrive at the Professional Review Rank.

Other Rankings: Autos.com also ranks vehicles based on criteria such as fuel efficiency, cargo capacity, and comfort and convenience features. You can see some of the data that we have used to rate each vehicle in any given category by expanding the category header on the vehicle detail page. For example, click on the arrow next to "Passenger Space" on the Honda Civic detail page to see the actual measurements for that vehicle's interior. These measurements were stacked up against the interior measurements of all the other vehicles in the compact car segment in order to calculate the Honda Civic's rating in the Passenger Space category. That rating is then used to determine the Honda Civic's overall ranking in the compact car category.